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iii iiniiiiniuiii The Pittsburg & Midway Coal Mining Co. A Chevron Company 6400 South Fiddler's Green Circle, Englewood, CO 80111-4991 Mail Address: P.O. Box 6518, Englewood, CO 801556518 ~ FAl((303) 930<204 ~ Phone i303) 9303600 Ms. Sandra L. Brown Colorado Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, CO 80203 February 7, 2000 CDPS Permit CO-0032635 RECEIVED FEB ~ ~ 2000 Division of Minerals 8 Geology Dear Ms. Brown: Enclosed, please find the December 1999 CDPS results and fourth quarter 1999 WET testing results for the Edna Mine (Permit CO-0032638). DMP 00] did not discharge during the monitoring period. DMP 004 and 007 had discharge during the monitoring period. Submittal of the results have been delayed due to technical difficulties with the laboratory providing the analyses. P&M regrets any inconvenience the delay in reporting may have caused. P&M is currently reviewing the laboratory's protocols to ensure a more timely submittal of results in the future. Both DMI' 004 and 007 exceeded the permit's sulfate criteria. Due to the delay in analyses reporting from the laboratory, a second set of samples was not able to be tested during the monitoring period to determine if sulfate levels had receded. The sample with the high sulfate level taken at DMP 004 was collected during the first week of the moniroring period. DMP 004 discontinued discharging shortly thereafter with no discharge occumng during the remainder of the monitoring period. The first sample taken and analyzed for sulfate at DMP 007 subsequent to the exceeded value showed that sulfate concentrations were incompliance v`~ith permit criteria. Should you have any questions regazding these reports, please contact me at the Edna Mine. Sincerely, ~~~~~ Brian D. Gontarek Sr. Environmental Engineer cc: Mine File